Keyboard: ←/→ select card · ↑/↓ select flank · Space play · W Wildcard · Enter new match
Use Wildcard
Choose one face-down Wildcard. You see its identity briefly, then place it face-down over one opponent card from an earlier skirmish. The upcoming skirmish is still played, but its score is fixed at 1 point to your opponent. Any unused Wildcard after Round 3 costs 3 points.
Now click a highlighted opponent card on the battle line.